Rhubarb Pavlova Cake

• 4 egg-whites
• 8 oz. caster sugar
• ½ teaspoon

Whisk the egg-whites until stiff and peaky. Beat in sugar, teaspoon by teaspoon, until all has been incorporated. Fold in vanilla essence, cornflour and vinegar. Spread a 7 in. circle of meringue on one end of greased greaseproof paper or foil standing on a baking-sheet, making the sides higher than the centre to form a shell to hold the filling: For the top spoon 2 tablespoons meringue on the